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Simulation of powder bed metal additive manufacturing microstructures with coupled finite difference-Monte Carlo method

Journal Article · · Additive Manufacturing
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  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Clemson Univ., SC (United States)
  3. Univ. of Tennessee, Knoxville, TN (United States)

Grain-scale microstructure evolution during additive manufacturing is a complex physical process. As with traditional solidification methods of material processing (e.g. casting and welding), microstructural properties are highly dependent on the solidification conditions involved. Additive manufacturing processes however, incorporate additional complexity such as remelting, and solid-state evolution caused by subsequent heat source passes and by holding the entire build at moderately high temperatures during a build. We present a three-dimensional model that simulates both solidification and solid-state evolution phenomena using stochastic Monte Carlo and Potts Monte Carlo methods. The model also incorporates a finite-difference based thermal conduction solver to create a fully integrated microstructural prediction tool. The three modeling methods and their coupling are described and demonstrated for a model study of laser powder-bed fusion of 300-series stainless steel. The investigation demonstrates a novel correlation between the mean number of remelting cycles experienced during a build, and the resulting columnar grain sizes.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000; NA0003525
OSTI ID:
1773924
Alternate ID(s):
OSTI ID: 1773289
Report Number(s):
SAND-2021-3493J; 695011
Journal Information:
Additive Manufacturing, Vol. 41; ISSN 2214-8604
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (41)

Use of Detailed Particle Melt Modeling to Calculate Effective Melt Properties for Powders journal January 2018
Three-dimensional monte carlo simulation of grain growth in the heat-affected zone of a 2.25Cr-1Mo steel weld journal June 2000
A second report on diagrams of microstructure and hardness for heat-affected zones in welds journal November 1984
Probabilistic modelling of microstructure formation in solidification processes journal February 1993
Numerical investigation of effects of nucleation mechanisms on grain structure in metal additive manufacturing journal October 2018
3D multi-layer grain structure simulation of powder bed fusion additive manufacturing journal June 2018
Fluid and particle dynamics in laser powder bed fusion journal January 2018
Data Structures for Statistical Computing in Python conference January 2010
Columnar to equiaxed transition in solidification processing journal January 2001
Direct numerical simulation of mechanical response in synthetic additively manufactured microstructures journal June 2018
Additive manufacturing of metallic components – Process, structure and properties journal March 2018
A first report on diagrams for grain growth in welds journal November 1982
Simulation of the differential adhesion driven rearrangement of biological cells journal March 1993
Investigation on evolution mechanisms of site-specific grain structures during metal additive manufacturing journal July 2018
Effect of scan strategy on density and metallurgical properties of 17-4PH parts printed by Selective Laser Melting (SLM) journal November 2017
The computer simulation of microstructural evolution journal September 2001
Modeling analysis of grain morphologies in Directed energy deposition (DED) coating with different laser scanning patterns journal September 2019
Three-dimensional modeling of the microstructure evolution during metal additive manufacturing journal January 2018
Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool journal December 2009
Laser powder-bed fusion additive manufacturing: Physics of complex melt flow and formation mechanisms of pores, spatter, and denudation zones journal April 2016
A coupled Cellular Automaton–Lattice Boltzmann model for grain structure simulation during additive manufacturing journal November 2016
Real time-temperature models for Monte Carlo simulations of normal grain growth journal November 1996
Multi-scale modeling of solidification and microstructure development in laser keyhole welding process for austenitic stainless steel journal February 2015
A new point of view to determine the simulation temperature for the Potts model simulation of grain growth journal April 2014
Simulation of metal additive manufacturing microstructures using kinetic Monte Carlo journal July 2017
Errors, Artifacts, and Improvements in EBSD Processing and Mapping journal January 2005
Numerical modeling and experimental validation of thermal history and microstructure for additive manufacturing of an Inconel 718 product journal January 2018
Modeling of Ti-W Solidification Microstructures Under Additive Manufacturing Conditions journal May 2017
Predicting Mesoscale Microstructural Evolution in Electron Beam Welding journal March 2016
Localized melt-scan strategy for site specific control of grain size and primary dendrite arm spacing in electron beam additive manufacturing journal November 2017
Modeling and Simulation of Microstructure Evolution for Additive Manufacturing of Metals: A Critical Review journal August 2020
Three dimensional Monte Carlo simulation of grain growth during GTA welding of titanium journal December 2000
Phase field simulation of powder bed-based additive manufacturing journal February 2018
Microstructural Evolution During Normal/Abnormal Grain Growth in Austenitic Stainless Steel journal July 2014
Steady state columnar and equiaxed growth of dendrites and eutectic journal July 1984
A three-dimensional cellular automation-finite element model for the prediction of solidification grain structures journal December 1999
A Monte Carlo model for 3D grain evolution during welding journal August 2017
Scaling Monte Carlo kinetics of the Potts model using rate theory journal April 2000
Scaling of Monte Carlo simulations of grain growth in metals journal January 2009
Application of finite element, phase-field, and CALPHAD-based methods to additive manufacturing of Ni-based superalloys journal October 2017
Computer simulation of microstructure development in powder-bed additive manufacturing with crystallographic texture journal June 2021